Actually, the Linux operating system does support defragmentation. … The Linux ext2, ext3 and ext4 filesystems don’t need that much attention, but with time, after executing many many many read/writes the filesystem may require optimization. Otherwise the hard disk might become slower and may affect the entire system.

Do you need to defrag in Linux?

Although Linux file systems don’t need defragmentation as much or as often as their Windows counterparts, there’s still a possibility that fragmentation may occur. It could happen if the hard drive is too small for the file system to leave enough space between the files.

How do I defrag a drive in Linux?

If you actually need to defragment a file system, the simplest way is probably the most reliable: Copy all the files off the partition, erase the files from the partition, then copy the files back onto the partition. The file system will intelligently allocate the files as you copy them back onto the disk.